diff --git a/builders/macosx-builder.py b/builders/macosx-builder.py
index 6157a2c..79001cb 100644
--- a/builders/macosx-builder.py
+++ b/builders/macosx-builder.py
@@ -92,7 +92,6 @@ like this:
 
 import glob
 import os
-import distutils
 from pathlib import Path
 from shutil import copy, copytree, move, rmtree
 
@@ -349,12 +348,10 @@ class MacOSXBuilder(Builder):
         size += 10
 
         os.chdir(os.path.dirname(self.dmg_settings_path))
-        dmgbuild_exe = os.path.join(distutils.sys.exec_prefix, 'bin', 'dmgbuild')
-        argv = [dmgbuild_exe, '-s', self.dmg_settings_path, '-D', 'size={size}M'.format(size=size),
+        argv = ['-s', self.dmg_settings_path, '-D', 'size={size}M'.format(size=size),
                 '-D', 'icon={icon_path}'.format(icon_path=self.icon_path),
                 '-D', 'app={dist_app_path}'.format(dist_app_path=self.dist_app_path), dmg_title, self.dmg_file]
-        self._run_path(dmgbuild_exe, argv, 'Error running dmgbuild')
-        # Dmg done.
+        self._run_module('dmgbuild', argv, 'Error running dmgbuild')
         self._print('Finished creating dmg file, resulting file: %s' % self.dmg_file)
 
     def get_platform(self):
@@ -416,7 +413,7 @@ class MacOSXBuilder(Builder):
         Build the actual DMG
         """
         self._fix_qt_paths()
-        self._code_sign()
+        # self._code_sign()
         self._create_dmg()
 
 
diff --git a/pyinstaller-hooks/hook-websockets.legacy.py b/pyinstaller-hooks/hook-websockets.legacy.py
new file mode 100644
index 0000000..44db636
--- /dev/null
+++ b/pyinstaller-hooks/hook-websockets.legacy.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
+
+##########################################################################
+# OpenLP - Open Source Lyrics Projection                                 #
+# ---------------------------------------------------------------------- #
+# Copyright (c) 2008-2019 OpenLP Developers                              #
+# ---------------------------------------------------------------------- #
+# This program is free software: you can redistribute it and/or modify   #
+# it under the terms of the GNU General Public License as published by   #
+# the Free Software Foundation, either version 3 of the License, or      #
+# (at your option) any later version.                                    #
+#                                                                        #
+# This program is distributed in the hope that it will be useful,        #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of         #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          #
+# GNU General Public License for more details.                           #
+#                                                                        #
+# You should have received a copy of the GNU General Public License      #
+# along with this program.  If not, see <https://www.gnu.org/licenses/>. #
+##########################################################################
+import websockets.legacy.client
+import websockets.legacy.server
+
+
+hiddenimports = ['websockets.legacy.server', 'websockets.legacy.client']